US20140041432A1 - Hot-rolling machine for wire-rod and the like - Google Patents

Hot-rolling machine for wire-rod and the like Download PDF

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Publication number
US20140041432A1
US20140041432A1 US13/984,184 US201213984184A US2014041432A1 US 20140041432 A1 US20140041432 A1 US 20140041432A1 US 201213984184 A US201213984184 A US 201213984184A US 2014041432 A1 US2014041432 A1 US 2014041432A1
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US
United States
Prior art keywords
rolling
hot
wire
gear reduction
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/984,184
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English (en)
Inventor
Claudio Tomba
Massimiliano Zuccato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pert Srl
Original Assignee
Pert Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pert Srl filed Critical Pert Srl
Assigned to PERT S.R.L. reassignment PERT S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TOMBA, Claudio, ZUCCATO, Massimiliano
Publication of US20140041432A1 publication Critical patent/US20140041432A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings

Definitions

  • the present invention relates to a hot-rolling machine for wire rods and the like.
  • the present invention relates to a machine for the production of hot-rolled concrete-reinforcing bars, use to which the following description refers purely by way of example without this implying any loss of generality.
  • concrete-reinforcing bars are obtained by subjecting a steel wire rod with a roughly circular section to a process of hot-rolling that brings about a progressive reduction in the nominal section of the wire rod.
  • Hot-rolling lines that are used for performing this particular metallurgical operation are usually made up of an appropriate number of rolling units that are arranged in cascade one after another along the wire-rod feeding path, so that each rolling unit is able to bring about a slight reduction of the nominal section of the high-temperature steel, wire-rod whilst the latter advances along the hot-rolling line.
  • each rolling unit of the hot-rolling line is a machine completely separated from and independent of the others, and is usually made up of: a rolling stand provided with two opposed and counter-rotating milling rollers which are arranged one beside the other, locally substantially parallel and tangential to one another, so as to form/delimit in between themselves a groove or throttling within which the wire rod to be hot-rolled is forced to pass; and an electric motor which is mechanically coupled to both of the milling rollers via a large gear reducer so as to be able to drive the two milling rollers in rotation about the respective longitudinal reference axes.
  • the two milling rollers are fixed on the supporting frame of the rolling stand so as to be arranged horizontally one above the other, parallel and aligned to one another; and the supporting frame is structured so to prevent the two milling rollers from receding with respect to one another when the wire rod to be rolled is forced through the groove or throttling delimited by the two milling rollers, thus being deformed.
  • the distance between the rotation axes of the two milling rollers reduces progressively along the wire-rod feeding path so that each pair of milling rollers is able to deform and stretch the wire rod causing a slight reduction of the nominal section thereof.
  • the only way to increase the productivity per hour of the hot-rolling line consists in dividing/splitting longitudinally the wire rod that is fed at inlet to the hot-rolling line, and then directing each half of the wire rod towards a respective set of rolling units so to hot-roll the two halves of the wire rod simultaneously.
  • the simple doubling of the hot-rolling line in fact, entails a doubling of the rolling units, with consequent doubling of the extension of the shed that is to house the rolling line, and of the amount of spare parts to be kept always available for ordinary and extraordinary maintenance of the rolling line.
  • maintenance is of a preventive type and usually involves, at regular intervals, all the rolling units of the line.
  • Aim of the present invention is to provide rolling units that are more compact than the ones currently commercially available so as to contain the increase in space resulting from the bifurcation of the hot-rolling line.
  • FIG. 1 is a top plan view of a wire-rods and the like hot-rolling machine realized in accordance with the teachings of the present invention, with parts removed for clarity; whilst
  • FIG. 2 is a front view of the machine shown in FIG. 1 , sectioned along the line II-II and with parts removed for clarity.
  • reference number 1 designates as a whole a hot-rolling machine for wire rods and the like, which finds particularly advantageous use in the production of concrete-reinforcing bars.
  • the machine 1 is basically made up of a series of rolling units 2 that are arranged in cascaded one after the other along the wire-rod feeding path p so that each rolling unit 2 can deform plastically the high-temperature metal, wire rod b that moves along the path p, causing a slight reduction of the nominal section thereof.
  • the wire-rod feeding path p is substantially rectilinear and extends horizontally.
  • Each rolling unit 2 is equipped with a rolling stand 3 that is arranged exactly on the wire-rod feeding path p, and is provided with two opposed and counter-rotating milling rollers 4 which have a substantially cylindrical shape and are arranged one beside the other, locally substantially parallel and substantially tangential to one another, so as to form/delimit a rolling groove or throttling 4 a through which the wire rod b to be hot-rolled is forced to pass.
  • the longitudinal axes L of the two milling rollers 4 are arranged substantially on a same laying plane T (parallel to the plane of the sheet in FIG. 2 ), and are oriented so that the laying plane T is locally substantially perpendicular to the longitudinal axis of the wire rod, i.e. orthogonal to the feeding direction of the wire rod b along the path p, whilst the peripheral surfaces of the two milling rollers 4 are sized so as to form/delimit in between them selves a rolling groove or throttling 4 a through which the wire rod b to be hot-rolled is forced to pass.
  • the two hot mill milling rollers 4 are preferably, though not necessarily, arranged substantially horizontally position, one on top of the other.
  • each rolling unit 2 is moreover equipped with a mechanical gear reduction unit 5 , which is arranged beside the rolling stand 3 and is structured so as to be able to simultaneously drive into rotation the two milling rollers 4 about the respective longitudinal axes L substantially with identical peripheral velocities.
  • each rolling unit 2 is structured so as to form, with the corresponding rolling stand 3 , a single sectional elementary module 2 which is suitably structured for being aligned with other similar sectional elementary modules 2 along the wire-rod feeding path p, and for being mechanically coupled to the immediately adjacent sectional elementary modules 2 so as to compose/form a chain line of rolling units 2 , which are reciprocally connected so as to transmit torque in cascade from one another.
  • each rolling unit 2 is structured so to arrange its own mechanical gear reduction unit 5 adjacent to the mechanical gear reduction unit 5 of the other rolling unit or units 2 present along the wire-rod feeding path p, and the mechanical gear reduction unit 5 is structured so to be mechanically connectable directly to the mechanical gear reduction unit or reducers 5 of the immediately adjacent rolling units 2 so as to be able to form a cascade of mechanical gear reduction units 6 having a disassemblable structure, which extends parallel to the wire-rod feeding path p and is able to transmit the torque autonomously from one mechanical gear reduction unit 5 to another.
  • each rolling unit 2 is preferably, though not necessarily, provided with a respective lower supporting platform 7 , which is structured for being rigidly and stably anchored to the floor, and the rolling stand 3 and the mechanical gear reduction unit 5 of the rolling units 2 are arranged on the lower supporting platform 7 one beside the other.
  • the lower supporting platform 7 is substantially rectangular in shape and is anchored to the floor with its major side edges arranged locally substantially perpendicular to the feeding direction of the wire rod b along the path p.
  • the wire-rods and the like hot-rolling machine 1 furthermore comprises a preferably, though not necessarily, electrically- or hydraulically-operated single shared drive unit 8 which is structured so to be mechanically connected to the mechanical gear reduction unit 5 of just one of the sectional elementary modules 2 that form the chain line of rolling units 2 so as to be able to simultaneously drive into rotation the milling rollers 4 of all the rolling units 2 .
  • the drive unit 8 is structured so to be mechanically connected to just one of the mechanical gear reduction units 5 that form the cascade of mechanical gear reduction units 6 so as to be able to simultaneously drive into rotation the milling rollers 4 of all the rolling units 2 .
  • the two milling rollers 4 of each rolling stand 3 are fixed in an axially rotatable manner on a rigid supporting frame 9 , which is structured so as to prevent the two milling rollers 4 from receding with respect to one another when the wire rod b to be rolled passes through the rolling groove or throttling 4 a delimited by the peripheral surfaces of the two milling rollers 4 , thus deforming itself.
  • the rigid supporting frame 9 is provided with two side walls 9 a that are stably arranged parallel to and facing one another, and the two milling rollers 4 extend straddling the two side walls 9 a of supporting frame 9 , one beside the another, so that the longitudinal axes L of the two rolls are locally substantially orthogonal to the laying planes of the two side walls 9 a, and are preferably arranged substantially horizontally, one on top of the other.
  • each milling roller 4 has the two axial ends inserted in pass-through manner and trapped in an axially rotatable manner each within a corresponding side wall 9 a of the supporting frame 9 , and is shaped so that its central cross section can form/delimit, between the two side walls 9 a, the rolling groove or throttling 4 a through which the wire rod b to be rolled is forced to pass.
  • the two milling rollers 4 are both provided with a roughly cylindrical-shaped central cross section which extends between the two lateral side walls 9 a of the rigid supporting frame 9 , and are arranged adjacent to one another so that the corresponding central sections are locally substantially tangent to one another and can form/delimit the rolling groove or throttling 4 a through which the wire rod b to be rolled is forced to pass.
  • the central sections of the two milling rollers 4 are preferably, though not necessarily, shaped so as to form/delimit a rolling groove or throttling 4 a dimensioned for being engaged simultaneously by two wire rods b appropriately spaced apart from one another. Consequently, the wire-rod feeding path p can be engaged simultaneously by two high-temperature metal, wire rods b which move forward parallel to one another.
  • the rolling stand 3 of each rolling unit 2 is moreover also provided with a preferably electrically- or hydraulically-operated, a device for adjusting the distance between the rollers which is structured so as to be able to approach or move away, on command, the two milling rollers 4 to one another so as to be able to adjust the distance between the longitudinal axes L of the two rolls 4 while maintaining the milling rollers 4 always horizontal and locally parallel to one another.
  • a device for adjusting the distance between the rollers which is structured so as to be able to approach or move away, on command, the two milling rollers 4 to one another so as to be able to adjust the distance between the longitudinal axes L of the two rolls 4 while maintaining the milling rollers 4 always horizontal and locally parallel to one another.
  • the rigid supporting frame 9 is preferably, though not necessarily, substantially U-shaped and it is rigidly fixed onto the lower supporting platform 7 so that its two side walls 9 a overhangingly protrude upwards, in a substantially vertical direction; whilst the mechanical gear reduction unit 5 of the rolling unit 2 is fixed on the lower supporting platform 7 , alongside the rolling stand 3 , directly facing one of the two side walls 9 a of the rigid supporting frame 9 .
  • the mechanical gear reduction unit 5 is preferably, though not necessarily, coupled in a rigid and stable, though disassemblable manner directly to the side walls 9 a of the rigid supporting frame 9 .
  • the lower supporting platform 7 is preferably, though not necessarily, structured so as to enable the rolling stand 3 , or rather the rigid supporting frame 9 of the rolling stand 3 , to translate horizontally towards and away from the mechanical gear reduction unit 5 in a horizontal direction f locally perpendicular to the two side walls 9 a of the rigid supporting frame 9 , i.e. parallel to the longitudinal axes L of the two milling rollers 4 , so as to be able to uncouple, if need be, the rolling stand 3 from the corresponding mechanical gear reduction unit 5 .
  • the mechanical gear reduction unit 5 of each rolling unit 2 instead comprises: a rigid and substantially parallelepiped-shaped, outer boxlike casing 11 which is fixed on the lower supporting platform 7 with a first side wall 11 a directly facing the side wall 9 a of the rigid supporting frame 9 of the rolling stand 3 ; and two drive shafts 12 and 13 , which extend inside the boxlike casing 11 parallel to a same reference axis R locally substantially parallel to the feeding direction of the wire rod b along the path p, and come out with their distal ends outside of the boxlike casing 11 on opposite sides of the rolling stand 3 , once again in the feeding direction of the wire rod b.
  • the two drive shafts 12 and 13 are parallel to a same reference axis R locally perpendicular to the laying plane T of the longitudinal axes L of the two milling rollers 4 of the rolling stand 3 , and come out outside of the boxlike casing 11 on opposite sides of the rolling stand 3 in the feeding direction of the wire rod b along the path p.
  • the distal ends of the two drive shafts 12 and 13 sticks out from the two side walls 11 b of the boxlike casing 11 that are locally substantially orthogonal to the feeding direction of the wire rod b along path p so as to protrude from the sides of the side wall 9 a of the rigid supporting frame 9 , respectively in front of and behind the rolling stand 3 of the rolling units 2 .
  • the two drive shafts 12 and 13 are arranged coaxial to the reference axis R, one after the other, and overhangingly stick out from the two major side walls 11 b of the boxlike casing 11 .
  • the distal end of the main drive shaft 12 is shaped so to be mechanically connectable in an angularly rigid manner to the drive shaft of drive unit 8 or, alternatively, to the distal end of the secondary drive shaft 13 of the immediately preceding rolling unit 2 ; whereas the distal end of the secondary drive shaft 13 is shaped so to be mechanically connectable in an angularly rigid manner to the distal end of the main drive shaft 12 of the immediately subsequent rolling unit 2 .
  • the distal end of the main drive shaft 12 is designed to be fitted on the drive shaft of the drive unit 8 , or on the distal end of the secondary drive shaft 13 of the immediately preceding rolling unit 2 preferably, though not necessarily, via a first mechanical coupling joint of known type; whilst the distal end of the secondary drive shaft 13 is suited to be fitted on the distal end of the main drive shaft 12 of the immediately following rolling unit 2 preferably, though not necessarily, via a second mechanical coupling joint of known type.
  • the mechanical gear reduction unit 5 furthermore comprises a gear-set (not shown) preferably, though not necessarily, of epicycloidal type, which is structured to connect the main drive shaft 12 with the two milling rollers 4 of the rolling stand 3 , and with the secondary drive shaft 13 , so as to transmit the torque to both of the components.
  • a gear-set (not shown) preferably, though not necessarily, of epicycloidal type, which is structured to connect the main drive shaft 12 with the two milling rollers 4 of the rolling stand 3 , and with the secondary drive shaft 13 , so as to transmit the torque to both of the components.
  • the gear-set of the mechanical gear reduction unit 5 is moreover dimensioned so that the rotating speed of the secondary drive shaft 13 is equal to that of the main drive shaft 12 .
  • the drive unit 8 is arranged alongside the first sectional elementary module 2 that forms the chain line of rolling units 2 , so as to be aligned with the distal end of the main drive shaft 12 of the mechanical gear reduction unit 5 of the first sectional elementary module 2 , and is preferably, though not necessarily, made up of a high-power electric motor 14 and a gear reducer 15 that connects the drive shaft of the electric motor 14 to the distal end of the main drive shaft 12 of the mechanical gear reduction unit 5 of the first sectional elementary module 2 .
  • a single electric motor 14 can simultaneously drive into rotation the two milling rollers 4 of all the rolling units 2 aligned along the wire-rod feeding path p, thus reducing the overall dimensions of the machine.
  • each rolling unit 2 is constituted by a single sectional elementary module 2 greatly facilitates the transportation in loco and subsequent assemblage of the hot-rolling machine 1 for wire rods and the like.
  • each rolling unit 2 is formed by a single sectional elementary module 2 considerably simplifies the design of the machine 1 for hot-rolling of wire rods and the like as a whole, and the production of the individual component parts.
  • a second shared drive unit (not shown) can be arranged alongside the last sectional elementary module 2 that forms the chain line of rolling units 2 and be connected to the distal end of the secondary drive shaft 13 of the mechanical gear reduction unit 5 of the last sectional elementary module 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Laminated Bodies (AREA)
US13/984,184 2011-02-07 2012-02-07 Hot-rolling machine for wire-rod and the like Abandoned US20140041432A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTV2011A000018 2011-02-07
ITTV2011A000018A IT1403827B1 (it) 2011-02-07 2011-02-07 Macchina per la laminazione a caldo di vergelle ed affini.
PCT/IB2012/050553 WO2012107881A1 (en) 2011-02-07 2012-02-07 Hot-rolling machine for wire-rod and the like

Publications (1)

Publication Number Publication Date
US20140041432A1 true US20140041432A1 (en) 2014-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US13/984,184 Abandoned US20140041432A1 (en) 2011-02-07 2012-02-07 Hot-rolling machine for wire-rod and the like

Country Status (6)

Country Link
US (1) US20140041432A1 (it)
EP (1) EP2673097B1 (it)
CN (1) CN103501929B (it)
IT (1) IT1403827B1 (it)
RU (1) RU2013141175A (it)
WO (1) WO2012107881A1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7251313B2 (ja) * 2019-05-24 2023-04-04 セイコーエプソン株式会社 画像読取装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962581A (en) * 1929-05-25 1934-06-12 Farrel Birmingham Co Inc Drive mechanism for rolling mills and the like
US2664019A (en) * 1946-06-29 1953-12-29 Henderson Leonard Bayliffe Rolling machine
US2757556A (en) * 1950-03-27 1956-08-07 Kocks Gmbh Friedrich Gear drive for rolling mill
US3587277A (en) * 1968-09-30 1971-06-28 Pomini Farrel Spa Continuous rolling mill
US4366694A (en) * 1980-09-17 1983-01-04 Morgan Construction Company Compact rolling mill
US20020162376A1 (en) * 2001-02-15 2002-11-07 Sms Demag Aktiengesellschaft Compact two-line rod-rolling stand
US7523632B2 (en) * 2007-02-15 2009-04-28 Morgan Construction Company Modular rolling mill

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945234A (en) * 1975-01-02 1976-03-23 Rolf Steinbock Tandem rolling mill arrangement
JPS5788908A (en) * 1980-11-19 1982-06-03 Sumitomo Metal Ind Ltd Method for controlling product dimension of wire rod finishing block mill
DE3574463D1 (de) * 1984-04-28 1990-01-04 Schloemann Siemag Ag Walzgeruest.
CN2049564U (zh) * 1989-04-19 1989-12-20 冶金工业部北京冶金设备研究所 紧凑式连轧机组
US5595083A (en) * 1994-08-01 1997-01-21 Morgan Construction Company Modular rolling mill
CN2267874Y (zh) * 1996-12-19 1997-11-19 邱国荣 线材热轧机
ITMI20041526A1 (it) * 2004-07-28 2004-10-28 Vai Pomini Srl "monoblocco finitore con rapporto di trasmissione ottimizzato per un impianto di laminazione di billette"
CN2761299Y (zh) * 2005-01-13 2006-03-01 伊东新(德阳)线缆设备有限公司 金属线材连轧机
CN201431992Y (zh) * 2009-06-26 2010-03-31 德阳博创电工设备有限公司 金属线材连轧机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962581A (en) * 1929-05-25 1934-06-12 Farrel Birmingham Co Inc Drive mechanism for rolling mills and the like
US2664019A (en) * 1946-06-29 1953-12-29 Henderson Leonard Bayliffe Rolling machine
US2757556A (en) * 1950-03-27 1956-08-07 Kocks Gmbh Friedrich Gear drive for rolling mill
US3587277A (en) * 1968-09-30 1971-06-28 Pomini Farrel Spa Continuous rolling mill
US4366694A (en) * 1980-09-17 1983-01-04 Morgan Construction Company Compact rolling mill
US20020162376A1 (en) * 2001-02-15 2002-11-07 Sms Demag Aktiengesellschaft Compact two-line rod-rolling stand
US7523632B2 (en) * 2007-02-15 2009-04-28 Morgan Construction Company Modular rolling mill

Also Published As

Publication number Publication date
EP2673097B1 (en) 2016-02-03
CN103501929B (zh) 2016-06-15
CN103501929A (zh) 2014-01-08
EP2673097A1 (en) 2013-12-18
ITTV20110018A1 (it) 2012-08-08
WO2012107881A1 (en) 2012-08-16
RU2013141175A (ru) 2015-03-20
IT1403827B1 (it) 2013-10-31

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AS Assignment

Owner name: PERT S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TOMBA, CLAUDIO;ZUCCATO, MASSIMILIANO;REEL/FRAME:031490/0250

Effective date: 20131025

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION